Enemy outpost power...

[TheMeInTeam]

Using snipers + zoning out --> back in with individual pawns to teleport them around and get constant free shots is pretty unfair, but effective.

If you want effective exploits turn on DevMode and remove anything you don't want 

Don't be ridiculous.  There is a clear delineation between playing within the game rules vs using something like a cheat/dev mode/mod/whatever to bypass the game rules.

You will find even pinning this as an "exploit" while being self-consistent to be problematic, if you try to make your case/standards coherent.  It is clearly something that isn't balanced though, the risk vs cost/reward is way off. 

[Haapz]

If youre having trouble with large amounts of enemies just think about real life where usually an attacking force needs to be roughly 3 times as big as a defending force assuming equal equipment training and a normal amount of fortifications

If you dont have the pawns for it just accept that you cant attack that outpost and come back when you have a larger army or do one of the many suggestions here and outplay the AI of the enemy.